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AUTHORS: Amy Shook, University of Dubuque; David E Koch, University of Dubuque
ABSTRACT: Turtle Populations in Pool 12 of the Mississippi River have been observed by students from the University of Dubuque for ten years. This Mississippi River system has a complex set of habitats. This year’s project looks at some of the variations in turtle species distributions in some of those habitats. Turtles were caught using hoop nets, marked, and returned. The majority of turtles captured were in backwater habitats, with Painted Turtles (Chrysemys picta) being the most common species. Population levels were lower than previous years. Overall species richness was 5 with a Shannon’s Diversity Index of 0.93. This trapping efforts indicated that almost half of all turtles caught, were adolescent or juvenile turtles.
